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Award-Winning AC Repair Company Serving Orange County Since 1996

The Best Choice For Heating & Air Conditioning Services In
Orange County

Heating and Cooling Solutions for Irvine Homes & Businesses

McMaster Heating & Air Conditioning is an award-winning, family-owned HVAC company serving Orange County and surrounding areas since 1996. As a certified heating and cooling contractor with decades of experience and thousands of satisfied customers, we are dedicated to providing every client with the ideal indoor comfort for their home or business. Whether you need an A/C tune-up to prepare for the summer heat or furnace repair to keep warm during winter, the experienced team at McMaster Heating & Air Conditioning can help.

Orange County's Indoor Air Quality Experts

Heating and Cooling Services

At McMaster Heating & Air Conditioning, we are experts in the latest indoor air quality products that promote healthy environments for homes and businesses. As a Carrier Factory Authorized Dealer, we offer factory-direct access to their highly effective whole-home air purifiers, spot ventilation systems, air monitors, commercial air scrubbers, humidifiers, dehumidifiers, and more. We also offer the iWave Air Purifier, which uses advanced clean air technology to remove viruses, bacteria, particles, smoke, odors, and VOCs from the air, and is the only IAQ product proven to kill evaporator coil bacteria.

Learn more about our IAQ services

Customer Reviews


I recently had McMaster Heating and Air installed the Carrier Infinity HVAC system in my house. I did my research and compare the cost and product specifications with different Carrier Authorized Dealers. I chose McMaster not only for great cost savings, but also for the reputations since they also installed the complete HVAC system for my neighbor. The McMaster team are very professional, polite and respectful. They did a great job and the system is working well with the temperature and humidity set to run consistently throughout the day. I highly recommend McMaster for all heating and air conditions services.

Chris H., Orange, CA Via Yelp Testimonial


I chose McMaster heating & Air last year after trying several disappointing companies. I found them honest and reliable. They were very helpful in getting our old AC working (before a terrible heat wave hit) as they couldn't fit us in for our installation for a couple of weeks. All the guys are clean, and professional. I trust this company and the Carrier product they sell. This AC unit is so quiet and efficient. We are happy!

Janet B., Costa Mesa, CA Via Yelp Testimonial

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Heating & Cooling Installation, Repair, and Maintenance Services

Heating Air Conditioning Carrier Products

McMaster Heating & Air Conditioning provides a full range of heating and cooling installation, repair, and maintenance services for Irvine, Newport Beach, Mission Viejo, and surrounding areas. For our residential customers, we offer a whole-home approach to the installation of air conditioning and heating systems that begins with a thorough evaluation of your current HVAC system's performance. We then design the ideal system for your indoor comfort preferences and budget. We also offer expert repairs and tune-ups for home A/C units and furnaces.

Our commercial HVAC system services include the design and installation of commercial HVAC systems, rooftop unit change-outs, tenant improvements, energy-efficiency retrofits, emergency HVAC repair services, affordable maintenance agreements, and more.

Call us today at (949) 481-7995. We offer free onsite estimates for new installations anywhere in Orange County. When you choose McMaster Heating & Air Conditioning, you will receive access to a dedicated team of HVAC professionals who always go the extra mile to provide the best HVAC equipment, repair, and maintenance services for a fair price.

Factory Authorized Carrier Dealer - McMaster Heating and Air Conditioning Carrier Certified Health Air Expert NATE Certified HVAC Technicians NCI National Comfort Institute, Inc. Ozone-Friendly Puron Refrigerant TECH Clean California Energy Solutions

Proudly Serving All of Orange County

  • Aliso Viejo
  • Anaheim
  • Brea
  • Buena Park
  • Costa Mesa
  • Coto De Caza
  • Cypress
  • Dana Point
  • Dove Canyon
  • Foothill Ranch
  • Fountain Valley
  • San Juan Capistrano
  • Santa Ana
  • Seal Beach
  • Southern California
  • South Orange County
  • Stanton
  • Tustin
  • Villa Park
  • Westminster
  • Yorba Linda
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